EP 4363869 A1 20240508 - ABSENCE OF VOLTAGE DETECTION DEVICE FOR MEDIUM VOLTAGE
Title (en)
ABSENCE OF VOLTAGE DETECTION DEVICE FOR MEDIUM VOLTAGE
Title (de)
VORRICHTUNG ZUR ERKENNUNG DER ABWESENHEIT EINER SPANNUNG FÜR MITTELSPANNUNG
Title (fr)
DISPOSITIF DE DÉTECTION D'ABSENCE DE TENSION POUR TENSION MOYENNE
Publication
Application
Priority
- US 202163217835 P 20210702
- US 202117517134 A 20211102
- US 2022034304 W 20220621
Abstract (en)
[origin: WO2023278200A1] A system for the verification of the absence of voltage has a first series of resistors and a first voltage limiter connected between a power line and a first voltage sensor and such as to limit a sensed voltage to a set amount above a threshold set by a standard and a first series of LC resonance filters connected between the power line and a RF signal generator. The system also has a second series of resistors and a second voltage limiter connected between the power line and a second voltage sensor and a second series of LC resonance filters connected between the power line and an RF signal detector. The system is configured to detect continuity to the voltage line by sending an RF signal generated by the RF signal generator through the first lead line and detecting it at the RF signal detector via the second lead line.
IPC 8 full level
G01R 19/155 (2006.01)
CPC (source: EP US)
G01R 19/155 (2013.01 - EP US); H02M 3/07 (2013.01 - US); H03H 7/0115 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2023278200 A1 20230105; CA 3222024 A1 20230105; EP 4363869 A1 20240508; US 11959946 B2 20240416; US 2023003774 A1 20230105
DOCDB simple family (application)
US 2022034304 W 20220621; CA 3222024 A 20220621; EP 22744011 A 20220621; US 202117517134 A 20211102